岩石失稳破裂的综合刚度和综合能量准则  

Comprehensive rigidity and comprehensive energy criterion of the rock burst

作　　者：潘岳[1] 王志强[1] 李爱武[1] 

机构地区：[1]青岛理工大学土木工程学院,青岛266520

出　　处：《岩土力学》2009年第12期3671-3676,共6页Rock and Soil Mechanics

基　　金：山东省教委重点资助项目(No.G04D15);山东省自然科学基金(No.Y2005-A03)资助项目

摘　　要：Cook刚度准则考虑了试验机内弹性应变能释放对岩石试样失稳破裂的影响,基于弹性能指数和冲击能指数的剩余能量法考虑了岩石内贮存的弹性能对岩样失稳破裂的影响。鉴于岩样失稳破裂时试验机和岩石内都有弹性能释放,建议将两者结合,综合考虑试验机和岩石内贮存的弹性能释放对岩样失稳破裂的效应,称之为岩石失稳破裂的综合刚度和综合能量准则,可以更为合理地确定岩石失稳破裂起始点、终止点位置、给出岩石失稳破裂时试验机-岩样系统(或一般岩体系统)的弹性能释放量计算关系,并可以用几何形式表示这些关系。In Cook rigidity criterion, it is taken into account that the release of the elastic strain energy in test machine will affect the burst of the rock sample. On the other hand, the residual energy method based on the elastic energy exponent and the impact energy exponent takes the influence into account that the elastic energy stored in the rock acts on the burst of the rock sample. In view of the fact that the test machine and the rock interior releases the elastic energy respectively with the burst of the rock sample, it is suggested that both sides be combined, i.e. the influence exerted on the burst of the rock sample through the elastic energy releasing between the test machine and the rock interior be considered comprehensively, it is so-called the comprehensive rigidity and comprehensive energy criterion of the burst of rock. This can determine the position of starting point and end point of the burst of rock more reasonably, give the calculation relationship of the elastic energy releasing amount of the test machine-rock sample system （i.e. the general rock body system） with the burst of rock, and can express these relationships through geometry form.

关 键 词：岩石 失稳破裂 弹性能释放 判别法 

分 类 号：TD324.1[矿业工程—矿井建设]